Detroit Free Press Marathon introduces new anti-doping policy for 2023

Mary Akor of Gardenia, Calif., won the 2022 race after previously serving a two-year suspension for doping. In 2023, she will be unable to defend her marathon title due to its new anti-doping policy

Detroit Free Press Marathon drops ArriveCAN protocols

Race participants will no longer be required to carry proof of vaccination during the race

Canadian government requires ArriveCan app for Detroit marathon runners

Runners taking part in the marathon and international half marathon will be required to carry their passport, proof of vaccination and ArriveCan receipt